Microstructure and Properties of Liquefied Wood-Based Activated Carbon Fibers Prepared from Precursors and Carbon Fibers


  • Wenjing Liu
  • Minren Shi
  • Erni Ma
  • Guangjie Zhao


Liquefied wood, activated carbon fibers, precursors, carbon fibers, microstructure


Liquefied wood-based activated carbon fibers (LWACF) were prepared from liquefied wood-based precursors (LWP) and liquefied wood-based carbon fibers. Microstructure and properties of LWACF were studied using analysis of X-ray diffraction, nitrogen adsorption-desorption isotherms, X-ray photoelectron spectroscopy, and a microtensile tester. It was found that LWACF prepared from LWP (LWACF1) could form a larger crystal size and denser graphite-like structure than those prepared from LWCF (LWACF2). However, for LWACF2, micropores were more numerous and average micropore width was larger, leading to the conclusion that LWACF2 had smaller diameter and lower mechanical properties than LWACF1 and that the burn-off value of LWACF2 was larger than that of LWACF1. Furthermore, excess amounts of element carbon (C) and C bonded to oxygen-containing functions were found on the surface of LWACF2. In conclusion, postcarbonization could damage the graphite-like structure, resulting in expanded micropores and impaired mechanical properties. Postcarbonization brought about an increase in the amount of element C and in the relative content of C bonded to oxygen-containing functions.


Brunauer S, Emmett PH, Teller E (1938) Adsorption of gases in multimolecular layers. J Am Chem Soc 60(2):309-319.nChiang Y, Lee C, Lee H (2007) Characterization of microstructure and surface properties of heat-treated PAN-and rayon-based activated carbon fibers. J Porous Mater 14(2):227-237.nde Boer JH, Lippens BC, Linsen BG, Broekhoff JCP, van den Heuvel A, Osinga TJ (1966) Thet-curve of multimolecular N2-adsorption. J Colloid Interface Sci 21(4):405-414.nFrank E, Hermanutz F, Buchmeiser MR (2012) Carbon fibers: Precursors, manufacturing, and properties. Macromol Mater Eng 297(6):493-501.nFu R, Liu L, Huang W, Sun P (2003) Studies on the structure of activated carbon fibers activated by phosphoric acid. J Appl Polym Sci 87(14):2253-2261.nIshii C, Suzuki T, Shindo N, Kaneko K (1997) Structural characterization of heat-treated activated carbon fibers. J Porous Mater 4(3):181-186.nKwok RWM (2000) XPSPEAK, Version 4.1 manual. Department of Chemistry, The Chinese University of Hong Kong, Shatin, Hong Kong. http://xpspeak.software.informer.com/4.1/ (10 April 2013). http://xpspeak.software.informer.com/4.1/'>http://xpspeak.software.informer.com/4.1/nLastoskie C, Gubbins KE, Quirke N (1993) Pore size distribution analysis of microporous carbons: A density functional theory approach. J Phys Chem-US 97(18):4786-4796.nLee J, Kim J, Kim S (2007) Microtexture and electrical properties of PAN-ACF. J Mater Sci 42(7):2486-2491.nLiu W, Zhao G (2012) Effect of temperature and time on microstructure and surface functional groups of activated carbon fibers prepared from liquefied wood. Bioresources 7(4):5552-5567.nMa X, Zhao G (2008) Structure and performance of spinning solution prepared from liquefied wood. Wood Fiber Sci 40(3):470-475.nMa X, Zhao G (2010) Preparation of carbon fibers from liquefied wood. Wood Sci Technol 44(1):3-11.nMa X, Zhao G (2011) Variations in the microstructure of carbon fibers prepared from liquefied wood during carbonization. J Appl Polym Sci 121(6):3525-3530.nMichio I, Kang F (2006) Carbon materials science and engineering—From fundamentals to applications. Tsinghua University Press, Beijing, China.nPaiva MC, Bernardo CA, Nardin M (2000) Mechanical, surface and interfacial characterisation of pitch and PAN-based carbon fibres. Carbon 38(9):1323-1337.nPark S, Jang Y (2003) Preparation and characterization of activated carbon fibers supported with silver metal for antibacterial behavior. J Colloid Interface Sci 261(2):238-243.nPelekani C, Snoeyink V (2000) Competitive adsorption between atrazine and methylene blue on activated carbon: The importance of pore size distribution. Carbon 38(10):1423-1436.nRyu Z, Rong H, Zheng J, Wang M, Zhang B (2002) Microstructure and chemical analysis of PAN-based activated carbon fibers prepared by different activation methods. Carbon 40(7):1144-1147.nShen Q, Zhang T, Zhang W, Chen S, Mezgebe M (2011) Lignin-based activated carbon fibers and controllable pore size and properties. J Appl Polym Sci 121(2):989-994.nShen W, Zheng J, Guo Q (2005) Preparation of high surface area mesoporous activated carbon fiber and its adsorption properties of sulfides from light oil. Stud Surf Sci Catal 156:951-956.nSu C, Zeng Z, Peng C, Lu C (2012) Effect of temperature and activators on the characteristics of activated carbon fibers prepared from viscose-rayon knitted fabrics. Fiber Polym 13(1):21-27.nTexier-Mandoki N, Dentzer J, Piquero T, Saadallah S, David P, Vix-Guterl C (2004) Hydrogen storage in activated carbon materials: Role of the nanoporous texture. Carbon 42(12-13):2744-2747.nValente Nabais JM, Carrott PJM, Ribeiro Carrott MML, Menéndez JA (2004) Preparation and modification of activated carbon fibres by microwave heating. Carbon 42(7):1315-1320.nVautard F, Ozcan S, Paulauskas F, Spruiell JE, Meyer H, Lance MJ (2012) Influence of the carbon fiber surface microstructure on the surface chemistry generated by a thermochemical surface treatment. Appl Surf Sci 261:473-480.nXu B, Wu F, Cao G (2006) Effect of carbonization temperature on microstructure of PAN-based activated carbon fibers prepared by CO2 activation. New Carbon Mater 21(1):1-5.n






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